Effect of extrusion process on microstructure of 6061 alloy bar for cold forging
In this paper,the effects of alloy composition,extrusion temperature and extrusion speed on the microstructure of cold forging bar were studied by hot extrusion,cold forging and microstructure observation.The results show that the addition of Cr and Mn alloy elements can significantly improve the grain morphology of extruded bars.Using high-temperature and high-speed extru-sion process,the whole section of low Cr and Mn alloy extruded bar can be completely fine-grained.It meets the requirement of raw material quality in cold forging process,and at the same time,it can greatly improve the extrusion production efficiency.It is the most economical and effective industrial production scheme.
cold forginghigh temperature and high speedrecrystallization
万方数据
维普
